Enantiomerically pure isoxazolines via addition of nitrile oxides to chiral N-acryloyl toluene-2,α-sultams
作者:Wolfgang Oppolzer、Arend J. Kingma、Sasi K. Pillai
DOI:10.1016/s0040-4039(00)93489-0
日期:1991.9
New saccharine-derived, crystalline acryloylsultams undergo efficient 1,3-dipolar cycloadditions of nitrileoxides with ≥95:5 stereoface discrimination. Products or are purified by simple crystallization and cleaved with recovery of the chirophore to provide optically pure Δ2-isoxazolines .
Zhang, Jiancun; Curran, Dennis P., Journal of the Chemical Society. Perkin transactions I, 1991, p. 2627 - 2631
作者:Zhang, Jiancun、Curran, Dennis P.
DOI:——
日期:——
Total synthesis of nonactin
作者:Yu Young Lee、Byeang Hyean Kim
DOI:10.1016/0040-4020(95)00913-2
日期:1996.1
Utilizing the efficient preparation of (+)-nonactic acid(2a) and (−)-methyl 8-epi-nonactate (4b) starting from optically active 2-isoxazolines 5a and 5b, respectively, the totalsynthesis of nonactin has been accomplished. Based on the high dilution version of the Yamaguchi's method, the final macrolactonization has been completed in high yield.